Kashii

Kashii is one of the two giants that guarded the front gate of Enies Lobby. As a giant Kashii is not only many times bigger then a normal human but also equally many times stronger. As proven against the Kairiki Destroyers of the Franky Family a mere human no matter what the strength or size will have no easy battle against them. Kashii and his partner Oimo are natural born fighters. In the end i takes the efforts of the GalleyLa039s and Franky Family039s best fighters along with the help of Sodom and Gommorah to down both Oimo and his partner. Source: One Piece Wikia